The total surface area of a closed cylinder is $748\, cm^2$. If its radius is $7\, cm$,find its height (in $cm$).

Surface area of a cuboid = $\ldots \ldots \ldots$

$A$ conical tent is made from a piece of cloth with an area of $165 \, m^{2}$. The radius of the base of the tent is $5 \, m$.
$(i)$ If one student occupies an average of $\frac{5}{7} \, m^{2}$ of ground area,how many students can sit in the tent?
$(ii)$ Find the volume of the cone.

Find the lateral surface area of a cube with an edge length of $15 \, cm.$ (in $cm^{2}$)

The surface area of a sphere is $5544 \, cm^2$. Find its volume in $cm^3$.

The surface area of a cube whose edge is $a$ is: (in $a^{2}$)